/*
 * Copyright 2021 TiKV Project Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.tikv.common.util;

import java.io.Serializable;
import java.util.Objects;

public class Pair<F, S> implements Serializable {
  public final F first;
  public final S second;

  public Pair(F f, S s) {
    first = f;
    second = s;
  }

  public static <F, S> Pair<F, S> create(F f, S s) {
    return new Pair<>(f, s);
  }

  @Override
  public String toString() {
    return String.format("[%s:%s]", first, second);
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    Pair<?, ?> pair = (Pair<?, ?>) o;
    return Objects.equals(first, pair.first) && Objects.equals(second, pair.second);
  }

  @Override
  public int hashCode() {
    return Objects.hash(first, second);
  }
}
